2023 TOYOTA TUNDRA HYBRID battery

1153-2. Opening, closing and locking the doors and tailgate
Owners Manual_USA_M0C052_en
3
Before driving
■If the smart key system or the
wireless remote control does
not operate properly
Use the mechanical key to lock and
unlock the doors. ( P.527)
Replace the key battery with a new
one if it is depleted. ( P.484)
■If the 12-volt battery is dis-
charged
The doors cannot be locked and
unlocked using the smart key sys-
tem or wireless remote control. Lock
or unlock the doors using the
mechanical key. ( P.527)
■Rear seat reminder function
●In order to remind you not to for-
get luggage, etc., in the rear seat,
when the power switch is turned to
OFF after any of the following con-
ditions are met, a buzzer will
sound and a message will be dis-
played on the multi-information
display for approximately 6 sec-
onds.
• The hybrid system is started within 10 minutes after opening
and closing a rear door.
• A rear door has been opened and closed after the hybrid system
was started.
However, if a rear door is opened
and then closed within approxi-
mately 2 seconds , the rear seat
reminder function may not operate.
●The rear seat reminder function
determines that luggage, etc., has
been placed in a rear seat based
on opening and closing of a rear
door. Therefore, depending on the
situation, the rear seat reminder
function may not operate and you
may still forget luggage, etc., in
the rear seat, or it may operate
unnecessarily.
●The rear seat reminder function
can be enabled/disabled.
(  P.561)
■Customization
Some functions can be customized. (
 P.561)
WARNING
■To prevent an accident
Observe the following precautions
while driving the vehicle.
Failure to do so may result in a
door opening and an occupant
falling out of the vehi cle, resulting
in death or serious injury.
●Ensure that all doors are prop-
erly closed and locked.
●Do not pull the inside handle of
the doors while driving.
Be especially careful for the front
doors, as the doors may be
opened even if the inside lock but-
tons are in locked position.
●Set the rear door child-protector
locks when children are seated
in the rear seats.
■When opening or closing a
door
Check the surroundings of the
vehicle such as wh ether the vehi-
cle is on an incline, whether there
is enough space for a door to
open and whether a strong wind
is blowing. When opening or clos-
ing the door, hold the door handle
tightly to prepare for any unpre-
dictable movement.

1193-2. Opening, closing and locking the doors and tailgate
Owners Manual_USA_M0C052_en
3
Before driving
●A board is not completely stowed
●Vehicle speed is approximately 3
mph (5 km/h) or higher
The boards will not automatically
deploy again when vehicle speed
returns to less th an 3 mph (5 km/h).
■If “Running Board Unable to
Deploy” is displayed on the
multi-Information display
The board may not be completely
deployed.
Close and open the door once more
or use the switch inside the vehicle
(  P.119) and completely deploy the
board.
■If “Power Steps Unable to
Retract” is displayed on the
multi-Information display
The boards may not be completely
stowed.
Check that nothing is caught
between the boards and the vehicle.
■If “Power Steps System Mal-
function See Owner’s Manual”
is displayed on the multi-infor-
mation display
The system may be malfunctioning.
Have the vehicle inspected by Toy-
ota dealer.
■When snow or mud is attached
to the boards or the boards are
frozen
The power running boards may not
operate correctly. Before stepping
on a board, check that it is com-
pletely deployed. If the power run-
ning boards are not operating
correctly, turn the power steps
switch off and refrain from use.
■After recharging/reconnecting
the 12-volt battery
If the power running boards have
not completely deployed or stowed,
the boards may not move in the
intended direction the first time they
are operated. However, from the
second time onwards, the boards
will resume nor mal operation.
■When getting in and out of the
vehicle
Take care because clothes and
shoes may become dirty due to con-
tact with the lower part of the vehicle
body.
1 Deploys the running boards
on both sides.
2 Stows the running boards on
both sides.
The power bed step is also linked
with switch operations. ( P.126)
Putting the switch in the neutral
position sets the power running
boards to AUTO mode. AUTO
mode allows the deploying/stowing
of the boards to b e linked to open-
ing/closing of the side doors.
Both power running boards and
power bed step are deployed when
“OUT” position is selected. Opera-
tion only if steps are not already
deployed.
Both power running boards and
power bed step are stowed when
“OFF” position is s elected. Opera-
tion only if steps are not already
stowed.
Deploying and stowing
the power running boards
from inside

1293-2. Opening, closing and locking the doors and tailgate
Owners Manual_USA_M0C052_en
3
Before driving
●When an interior alarm sounds
continuously
■If “Smart Key System Malfunc-
tion See Owner’s Manual” is
displayed on the multi-informa-
tion display
The system may be malfunctioning.
Have the vehicle inspected by Toy-
ota dealer immediately.
■If “Key Detected in Vehicle” is
shown on the multi-information
display
An attempt was m ade to lock the
doors using the smart key system
while the electronic key was still
inside the vehicle. Retrieve the elec-
tronic key from the vehicle and lock
the doors again.
■Battery-saving function
The battery-saving function will be
activated in order to prevent the
electronic key battery and the 12-
volt battery from being discharged while the vehicle is not in operation
for a long time.
●In the following situations, the
smart key system
may take some
time to unlock the doors.
• The electronic key has been left in an area of approxi mately 6 ft. (2
m) of the outside of the vehicle for
10 minutes or longer.
• The smart key system has not been used for 5 days or longer.
●If the smart key system has not
been used for 14 days or longer,
the doors cannot be unlocked at
any doors except the driver’s door.
In this case, take hold of the
driver’s door handle, or use the
wireless remote c ontrol or the
mechanical key, to unlock the
doors.
■Turning an electronic key to
battery-saving mode
●When battery-saving mode is set,
battery depletion is minimized by
stopping the electronic key from
receiving radio waves.
Press twice while pressing and
holding . Confirm that the elec-
tronic key indicator flashes 4 times.
While the battery-saving mode is
set, the smart key system cannot be
used. To cancel the function, press
any of the electronic key buttons.
●Electronic keys that will not be
used for long periods of time can
be set to the battery-saving mode
in advance.
SituationCorrection procedure
An attempt was
made to lock the
vehicle while a door was open.Close all of the doors
and lock the
doors again.
SituationCorrection procedure
The power switch
was turned to ACC while the driver’s
door was open (The driver’s door was
opened when the
power switch was in ACC).
Turn the power
switch off
and close
the driver’s door.
The power switch
was turned off while
the driver’s door was open.Close the driver’s door.

1303-2. Opening, closing and locking the doors and tailgate
Owners Manual_USA_M0C052_en
■Conditions affecting operation
The smart key system uses weak
radio waves. In the following situa-
tions, the communication between
the electronic key and the vehicle
may be affected, preventing the
smart key system, wireless remote
control and immobilizer system from
operating properly. (Ways of coping:
 P.527)
●When the electronic key battery is
depleted
●Near a TV tower, electric power
plant, gas station , radio station,
large display, airpo rt or other facil-
ity that generates strong radio
waves or electrical noise
●When carrying a portable radio,
cellular phone, cordless phone or
other wireless communication
device
●When the electronic key is in con-
tact with, or is covered by the fol-
lowing metallic objects
• Cards to which al uminum foil is
attached
• Cigarette boxes that have alumi- num foil inside
• Metallic wallets or bags
• Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless keys (that
emit radio waves) are being used
nearby
●When carrying the electronic key
together with the following devices
that emit radio waves
• Another electronic key or a wire- less key that emits radio waves
• Personal computers or personal
digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic con-
tent or metallic objects are
attached to the rear window
●When the electronic key is placed
near a battery charger or elec-
tronic devices
●When the vehicle is parked in a
pay parking spot where radio
waves are emitted.
■Note for the entry function
●Even when the electronic key is
within the effective range (detec-
tion areas), the system may not
operate properly in the following
cases:
• The electronic key is too close to the window or outside door han-
dle, near the ground, or in a high
place when the doors are locked
or unlocked.
• The electronic key is near the
ground or in a high place, or too
close to the center of the rear
bumper.
• The electronic key is on the instru- ment panel, or floor, or in the door
pockets or glove box when the
hybrid system is started or power
switch modes are changed.
●Do not leave the electronic key on
top of the instrument panel or near
the door pockets when exiting the
vehicle. Depending on the radio
wave reception conditions, it may
be detected by the antenna out-
side the cabin and the doors will
become lockable from the outside,
possibly trapping the electronic
key inside the vehicle.
●As long as the electronic key is
within the effective range, the
doors may be locked or unlocked
by anyone. However, only the
doors detecting the electronic key
can be used to unlock the vehicle.
●Even if the electro nic key is not
inside the vehicle, it may be possi-
ble to start the hybrid system if the
electronic key is near the window.
●The doors may unlock or lock if a
large amount of water splashes on
the door handle, such as in the
rain or in a car wash, when the
electronic key is within the effec-
tive range. (The doors will auto-
matically be locked after
approximately 60 seconds if the

1313-2. Opening, closing and locking the doors and tailgate
Owners Manual_USA_M0C052_en
3
Before driving
doors are not opened and closed.)
●If the wireless remote control is
used to lock the doors when the
electronic key is near the vehicle,
there is a possib ility that the door
may not be unlocke d by the entry
function. (Use the wireless remote
control to unloc k the doors.)
●Touching the door lock sensor
while wearing gloves may delay or
prevent lock operation.
●When the lock op eration is per-
formed using the lock sensor, rec-
ognition signals will be shown up
to two consecutive times. After
this, no recogniti on signals will be
given.
●If the door handle becomes wet
while the electronic key is within
the effective ran ge, the door may
lock and unlock repeatedly. In this
case, follow the fo llowing correc-
tion procedures to wash the vehi-
cle:
• Place the electronic key in a loca- tion 6 ft. (2 m) or more away from
the vehicle. (Take care to ensure
that the key is not stolen.)
• Set the electronic key to battery-
saving mode to disable the smart
key system. ( P.129)
●If the electronic key is inside the
vehicle and a door handle
becomes wet during a car wash, a
message may be shown on the
multi-informatio n display and a
buzzer will sound outside the vehi-
cle. To turn off the alarm, lock all
the doors.
●The lock sensor may not work
properly if it com es into contact
with ice, snow, mud, etc. Clean
the lock sensor and attempt to
operate it again.
●A sudden approach to the effec-
tive range or door handle may pre-
vent the doors from being
unlocked. In this case, return the
door handle to the original position
and check that the doors unlock
before pulling the door handle again.
●If there is another electronic key in
the detection area, it may take
slightly longer to unlock the doors
after the door handle is gripped.
■When the vehicle is not driven
for extended periods
●To prevent theft of
the vehicle, do
not leave the electronic key within
6 ft. (2 m) of the vehicle.
●The smart key system can be
deactivated in advance.
●Setting the electronic key to bat-
tery-saving mode helps to reduce
key battery depletion. ( P.129)
■To operate the system properly
●Make sure to carry the electronic
key when operating the system.
Do not get the electronic key too
close to the vehicle when operat-
ing the system from the outside of
the vehicle.
Depending on the position and hold-
ing condition of the electronic key,
the key may not be detected cor-
rectly and the system may not oper-
ate properly. (The alarm may go off
accidentally, or the door lock pre-
vention function m ay not operate.)
■If the smart key system does
not operate properly
●Locking and unlocking the doors
and tailgate: P. 5 2 7
●Starting the hybrid system:
P. 5 2 8
■Customization
Some functions can be customized.
(  P.561)
■If the smart key system has
been deactivated in a custom-
ized setting
●Locking and unlocking the doors
and opening the tailgate:
Use the wireless remote control or
mechanical key. ( P.113, 121,
527)

1363-3. Adjusting the seats
Owners Manual_USA_M0C052_enraised separately.
■Returning the bottom cush-
ions
Pull and release the strap, then
carefully lower the bottom cush-
ion using your other hand.
Check that the seat belts are not
twisted or caught in the seatback.
WARNING
Observe the following precau-
tions. Failure to do so may result
in death or serious injury.
■When raising the bottom
cushion
●Do not raise the bottom cushion
while driving.
●Stop the vehicle on level
ground, set the parking brake
and shift the shift lever to P.
●Do not allow any one to sit on
the hybrid battery (traction bat-
tery) cover while driving.
●Do not allow anyone to sit on
the rear center seat if the rear
right seat is raised, as the seat
belt buckle for the rear center
seat belt is then concealed on
the bottom cushion and cannot
be used.
●Adjust the position of the front
seats before raising the bottom
cushions so that the front seats
do not interfere with the bottom
cushion when ra ising the bot-
tom cushion.
■When returning the bottom
cushions
●Be careful not to get your hands
or feet pinched in the seat.
●Check that the seat belts are
not twisted or caught in the bot-
tom cushions.

1623-5. Opening, closing the windows and moon roof
Owners Manual_USA_M0C052_en
This function can be used to
prevent children from acciden-
tally opening or closing a pas-
senger window.
Press the switch.
The indicator will come on and
the passenger windows will be
locked.
The passenger windows can still be
opened and closed using the
driver’s switch even if the lock
switch is on.
■The power windows can be
operated when
The power switch is in ON.
■When the 12-volt battery is dis-
connected
The window lock switch is disabled.
If necessary, press the window lock
switch after reconnecting the 12-volt
battery.
WARNING
■Jam protection function
●Never use any part of your body
to intentionally a ctivate the jam
protection function.
●The jam protection function may
not work if something gets
jammed just before the window
is fully closed. Be careful not to
get any part of your body
jammed in the window.
■Catch protection function
●Never use any part of your body
or clothing to intentionally acti-
vate the catch p rotection func-
tion.
●The catch protection function
may not work if something gets
caught just before the window is
fully opened. Be careful not to
get any part of your body or
clothing caught in the window.
Preventing accidental
operation (window lock
switch)

1954-2. Driving procedures
Owners Manual_USA_M0C052_en
4
Driving
4-2.Driving procedures
1 Pull the parking brake switch
to check that the parking
brake is set. ( P.205)
The parking brake indicator will
come on.
2Check that the shift lever is in
P.
3 Firmly depress the brake
pedal.
and a message will be dis-
played on the multi-information dis-
play.
If it is not displayed, the hybrid sys-
tem cannot be started.
4 Press the power switch
shortly and firmly.
When operating the power switch,
one short, firm press is enough. It is
not necessary to press and hold the
switch.
If the “READY” indicator turns on,
the hybrid system will operate nor-
mally.
Continue depressing the brake
pedal until the “READY” indicator is
illuminated.
The hybrid system can be started from any power switch mode.
5
Check that the “READY” indi-
cator is illuminated.
The vehicle cannot be driven if the
“READY” indicator is off.
■If the hybrid system does not
start
●The immobilizer system may not
have been deactivated. ( P. 8 1 )
Contact your Toyota dealer.
●If a message related to start-up is
shown on the multi-information
display, read the message and fol-
low the instructions.
■When the ambient temperature
is low, such as during winter
driving conditions
●When starting th e hybrid system,
the flashing time of the “READY”
indicator may be long. Leave the
vehicle as it is until the “READY”
indicator is steady on, as steady
means the vehicle is able to move.
●When the hybrid battery (traction
battery) is extremely cold (below
approximately -31°F [-35°C])
under the influenc e of the outside
temperature, it ma y not be possi-
ble to start the hybrid system. In
this case, try to start the hybrid
system again after the tempera-
ture of the hybrid battery
increases due to the outside tem-
perature increase, etc.
●When the outside temperature is
extremely cold, the hybrid system
may be started by starter motor.
Power (ignition)
switch
Performing the following
operations when carrying
the electronic key on your
person starts the hybrid
system or changes power
switch modes.
Starting the hybrid sys-
tem